74LVT574 查看數據表（PDF） - Philips Electronics
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74LVT574 Datasheet PDF : 12 Pages
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Philips Semiconductors
3.3V Octal D-type flip-flop (3-State)
Product specification
74LVT574
AC SETUP REQUIREMENTS
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω; Tamb = –40°C to +85°C.
SYMBOL
PARAMETER
WAVEFORM
tS(H)
tS(L)
TH(H)
TH(L)
TW(H)
Setup time, High or Low, Dn to CP
Hold time, High or Low, Dn to CP
CP pulse width High or Low
AC WAVEFORMS
VM = 1.5V, VIN = GND to 2.7V
NO TAG
NO TAG
NO TAG
LIMITS
VCC = 3.3V ± 0.3V
MIN
MAX
VCC = 2.7V
MIN
2.0
2.4
2.0
2.4
0.3
0
0.3
0
3.3
3.3
3.3
3.3
UNIT
ns
ns
ns
1/fMAX
CP
1.5V
1.5V
1.5V
tw(H)
tPHL
tw(L)
tPLH
Qn
1.5V
1.5V
2.7V
0V
VOH
VOL
SV00044
Waveform 1. Propagation Delay, Clock Input to Output, Clock
Pulse Width, and Maximum Clock Frequency
ÉÉÉ ÉÉÉÉÉÉÉÉÉÉ Dn
1.5V 1.5V
ÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ts(H)
th(H)
1.5V 1.5V
ts(L)
th(L)
2.7V
0V
CP
1.5V
1.5V
2.7V
0V
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
Waveform 2. Data Setup and Hold Times
SV00108
OE
Qn
1.5V
1.5V
tPZH
tPHZ
1.5V
2.7V
0V
VOH
VOH –0.3V
0V
SV00119
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
2.7V
OE
1.5V
1.5V
0V
tPZL
tPLZ
3V
Qn
1.5V
VOL +0.3V
VOL
SV00120
Waveform 4. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
1998 Feb 19
6
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